Messages in this thread | | | Subject | Re: [PATCH] local_irq_disable removal | From | Thomas Gleixner <> | Date | Sun, 12 Jun 2005 02:01:04 +0200 |
| |
On Sat, 2005-06-11 at 16:50 -0700, Daniel Walker wrote: > > > Interesting .. So "cli" takes 7 cycles , "sti" takes 7 cycles. The current > > > method does "lea" which takes 1 cycle, and "or" which takes 1 cycle. I'm > > > not sure if there is any function call overhead .. So the soft replacment > > > of cli/sti is 70% faster on a per instruction level .. So it's at least > > > not any slower .. Does everyone agree on that? > > > > No, because x86 is not the whole universe > > It's only implemented on x86 .
Interesting POV.
What's not implemented by you does not exist.
tglx
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |